Finding the Fourth Proportional to 278,645.12, 384,293.40 and 187,986.68
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Solution
The fourth proportional to 278,645.12, 384,293.40 and 187,986.68 is: 259,261.82
Step by Step Solution
- Step 1: Write the proportion equation
278,645.12 : 384,293.40 = 187,986.68 : x - Step 2: Convert to fraction form
278,645.12/384,293.40 = 187,986.68/x - Step 3: Cross multiply
278,645.12x = 384,293.40 × 187,986.68 - Step 4: Simplify right side
278,645.12x = 72,242,040,411.91 - Step 5: Solve for x
x = 72,242,040,411.91/278,645.12 - Step 6: Final answer
x = 259,261.82
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.